Radiator



Nov. 30 1926.

A. S. HENRICH A RADIATOR Filed April 29, 1924 Patented Nov. 30, 1926. Y

UNITED STATES ALBERT S. HEINRICH, 0F FREEPORT, NEW YORK.

RADIATOR.

Application tiled April 29, 1924. Serial No. 709,724.

This invention relates to heat exchange apparatus and more particularlyto radiators for use with 'internal combustion en` gines. More`specifically the invention relates to that type of radiator applicablefor use on aircraft, when the exposed radiating surface must bepresented in the most etli-I cient and durable manner.

One object of this invention is to provide a radiator which will presenta great exposed surface for a given size and weight.

Another object is to provide a radiator that is suitable for use oncombative aircraft and which can withstand considerable mutilation bygunfire without being made inoperative.

Another object is to provide a radiator whose cooling surface is made upin such a manner that emergency repairs, as well vas service repairs,can be made with ease.

Another object is to provide a radiator adapted for use with theapparatus described and claimed in my copending application for U. S.patent, Serial No. 600,578, filed N0 vember 13, 1922.

Further objects will appear from the following description taken inconnection with 'the accompanying drawings illustrating thev preferredembodiment of the invention.

Referring tothe drawings illustrating, by way of example, the preferredembodiment of the invention:

Fig.l 1 shows an end view of the radiator with a portion shown insection.

Fig. 2 is a view showing a front elevation of the radiator with partsbroken away to disclose the structure.

Fig. 3 isf a section through one iin taken on line 3--3 of Fig. landshows the air vent.

Fig. 4 is-a perspective showing an endl numerals denote like parts inthevarious views: A radiator shell 1 of aerofoil form is provided ateach-end with Huid or header tanks 2 and 3. In the embodiment shown tank2 is adjacent the leading edge and tank 3 adjacent thetrailing edge.Strengthening .ribs 4 of aerofoil shape are provided with flanges as at5 which are riveted or otherwise suitably connected to the shell 1 as atv6, and serve to stiten the shell and also to provide supporting tubes7; thereby adapting the radiator for use in connection with my inventionas disclosed in the copending application referred to above. All ofwhich will be well understood by those skilled in the art afterunderstanding the present invention and that referred to above. Fin-likemembers 8 and 8 are attached to the front and rear tanks respectively,by means of flanges 9 and 9', and form in eitect a. part of saidrespective tanks being in communi cation therewith through the openbottom 10 and cooperating holes inthe tanks. One of these members isattached to the rear tank and one to the front tank with their openedends 11 facing each other. A plurality of tubes 12 are superimposed toform a fin 13 which then consists of a plurality of individual passages14 adapted to carry the cool ing tluid such for example as water. Thesetubes are inserted at their respective ends in the end openings 11 ofthe members 8 and 8 and are fastened therein by solder or other meanssuitable to form iluid tight joints.

Additional attaching means such as clips or straps 15 and 15 may beemployed to attach the fins 13 to the shell 1 at a point,

or points, between the members 8 and 8.

The tubes may be soldered together, or held in intimate contact only bysuch means as the clips 15 and 15 and the tank portions such for exampleas the parts 8-8. These tins may be arranged all von one side of theshell or on both sides as shown; and in either case form a mostetlicient'radiating surface. In order that the radiator mav be ventedproperly, holes 16 are drilled through the tubes of the upper fins, Fig.3, at substantially their uppermost point, or point farthest away fromthe longitudinal center line of the radiator, These vent holes are incommunication one with the other and in communication with theatmospherethrough any suitable means such for example as vent tubes 17which are in communication with the-outer or uppermost tubes and areheld thereagainstv by the clip 15. lTfhese vent tubes 17 pass along thetop of the respective fins and down over the respective members 8 wherethey may be connected with a common passage 1'8 in communication withthe other tins. A pet-cock (not shown) may be inserted in passage 18 toopen the same and allow the air to pass out while the radiator is beingfilled, as is well understood 1n the art. Similarly the tins in thelower side have vent holes through the tubes at a point under clip 15the clip 15( closing the noie in the outer wall of the outer tube; andthe inner tube 19 venting the lower tubes and allowing the air to. passinto the header tanks. These vent holes described in connection with theupper and lower fins respectively are all that is .needed when theradiator is used in a position similar to that shown i. e. the radiatorin general lying in a horizontal direction with the fins projecting insubstantially vertical planes. However the radiator is equally welladapted to extend in a general vertical direction with the fins insubstantially horizontal planes.

In the latter case, or in intermediate position, it may be desirable toprovide the tins on the lower side, relative to 1 with vent tubessimilar to 17 and in such a manner that no air pockets will be formedwhen the radiator is filled.

AIt is to be understood that whenever upper and lower are usedthroughout the specification and claims these terms are relative onlyand` refer to the relative position as shown in the drawings. It isobvious that the radiator -may be used in any position, eitherhorizontally, vertically or in intermediate positions; all of which willbe Well understood by those skilled in the art.

Where the radiator is mounted for use in connection with apparatussimilar to that described and claimed in my copending U. S. applicationSerial No. 600,574, referred to above, the tubes 7 provide a means ofsupport. When the radiator is to be mounted otherwise, any suitablesupporting or attaching members such as brackets or fittings 20 may beattached to the structural part of the radiator. A fairing piece 21 .ofstreamline form may be added to the trailing edge of the radiatorproper, to decrease the air resistance as the radiator is moved throughthe air.

A radiator of this type is highly eiiicientv and durable. A large amountof cooling surface or radiation surface can be presented in a smallspace. ln the case of combative aircraft it is most desirable, asprojectiles will `only damage a very small unit of the radiatingsurface. For service upkeep it presents many advantages among which isease of repair by replacement of either tube,

appended claims to cover all such modifications and changes.

lVhat I claim is:

1. A radiator comprising two' header tanks, and a plurality of finsextending in a direction forwardly and. rearwardly of said radiator andprojecting substantially at right angles thereto, said tins eachcoinprising a plurality of individual superimposed water passagesextending in a direction parallel to said fins with their respectivewalls forming side walls of said fins and being exposed to the air, saidwater passages being in communication at their respective ends with saidtanks and serving as cooling passages to conduct a liquid cooling mediumbetween said tanks.

2. A radiator comprising a'body portion including two header tanks, anda plurality of fins extending in a direction forwardly and rearwardly ofsaid radiator and projecting substantially at right angles thereto,

said fins each comprising a plurality of individual superimposed waterpassages extending in a direction parallel to said tins with theirrespective walls forming side walls of said fins and being exposed tothe air, said water passages being in coinmnnication at their respectiveends with said tanks 4and serving as cooling passages to conduct aliquid cooling medium between said tanks.

3. A radiator comprising a body portion including two header tanks, anda pluralityY of fins extending in a direction forwardly and rearwardlyof said radiator arranged on the top and bottom of said body andprojecting substantially at right angles thereto, said tins eachcomprising a plurality of individual superimposed water passagesextending in a direction parallel to said tins with their respectivewalls forming side Walls of said tins and being exposed to the air, saidwater passages bel ing 1n communication at their respective ends withsaid tanks and serving as cooling passages to conduct a liquid coolingmedium between said tanks.,

4. radiator of general aero foil form comprising a body portionincluding two header tanks, and a plurality of fins extending 1n adirection forwardly and rearwardly of said body projecting substantiallyat right angles thereto and substantially enclosing said body and spacedat intervals header tanks.

' along said body to provide suiiicient air pastanks, and a plurality offins'extending in` a direction forwardly and rearwardly of said radiatorand projecting substantially at right angles thereto, said fins eachconn-l prising a plurality of individual superimposed attachedtubeshaving water passages extending in ay direction parallel to said tinsand with their respective walls forming side walls of said fins andbeing Iexposed to the air, said tins beingconnected to saidl tanks attheir respective endsby members which form'parts of the respective finsand' serve as common passages between the respective ends of said tinsand the respective 6. A radiator comprising a body portion including twoheader tanks, a plurality of fins extending in a direetionforwardly andrearwardly vof said radiator'arranged on the top and bottom of said bodyand projecting substantially at right angles thereto, said tins eachcomprising a plurality of individual superimposed water passagesextending in a direction parallel, to said fins with their respectivewalls forming side walls of said tins and being exposed to the air, saidwater passages being in communication at their respective ends with saidtanks and serving as cooling passages to conduct a liquid coolmg mediumbetween said tanks, and means for venting a plurality of the passagescomprising each respective fin lying on the top of said body to theatmosphere at points intermediate the ends of said fins.

7. A radiator comprising a hollow form, a plurality of superimposedindividual water passages arranged in the formof fins extending in adirection forwardly and rearwardly over the outer surface of said formand projecting at right angles thereto.

8. A radiator comprising a shell of aerofoil form, a tank adjacent thefront and a tank adjacent the rear portion of said shell, a plurality ofsuperimposed individual water passages connecting said tanks andextending over the surface of said shell in the 'form of a. fin, and anair vent placing said tubes in communication with each other andwith'the atmosphere at approximately.

their uppermost point.

9. A radiator comprising a shell of aerofoil form, having upper andlower surfaces, a tank adjacent the front and a tank adjacent the rearportion of said shell, a plurality of tubular sections connecting saidtanks and extending over the surface of l said shell on the upper andlower surfaces thereof. and an air vent placing said tubes on the uppersurface in communication with each other and with the atmosphere atapproximately their uppermost p oint.

-10. A radiator of aerofoil form compris-` ing a shell, a front tank anda rear tank, la plurality of superimposed tubes arranged in the form ofa iin and extending between said tanks, members connecting each end ofsaid plurality of tubes to each respective tank, and an intermediatemember positioned between said tanks and adapted to attach said tubes tosaid shell.

1l. A radiator of aerofoil form comprising a shell with upper and lowersurfaces, a front tank and a rear tank, a plurality of ns eachcomprising a plurality of superimposed tubes attached together, saidtins extending between said tanks, and a plurality of said fins beingattached to the upper and lower surfaces respectively of said shell andtanks, and means connecting the tubes of each upper fin at theiruppermost point to a common outlet.

12. A radiator comprising two header tanks. and a plurality of finsextending in a direction. forwardly and rearwardly of said radiator andprojecting substantially at right angles thereto, said iins eachcomprising a plurality ofindividual superimposed fluid passagesextending in a direction parallel to said ins with their respectivewalls forming side walls of said ns and being exposed to the air throughwhich said radiator is adapted for relative movement, said Huid passagesbeingin communication at their respective ends with said tanks andserving as cooling passages to conduct a fluid medium to be cooledbetween said tanks.

In testimony whereof I have signed my name to this specification.

